maximhq/bifrost transports/v1.4.24

Bifrost HTTP v1.4.24

on GitHub

Bifrost HTTP Transport Release v1.4.24

✨ Features

• Dedicated Streaming Client — Each provider now uses a separate HTTP client for streaming requests with read-timeout cleared, eliminating premature SSE/EventStream termination on long-running responses; per-chunk idle detection is enforced via NewIdleTimeoutReader
• Anthropic Structured Outputs — Added response_format and structured output support for Anthropic models across chat completions and Responses API, including JSON-schema and JSON-object formats with order-preserving merge of additional model request fields (thanks @emirhanmutlu-natuvion!)
• MCP Tool Annotations — Preserve MCP tool annotations (title, readOnly, destructive, idempotent, openWorld) in bidirectional conversion between MCP tools and Bifrost chat tools so agents can reason about tool behavior
• Claude Opus 4.7 Support — Added compatibility for Claude Opus 4.7, including adaptive thinking, task-budgets beta header, display parameter handling, and "xhigh" effort mapping
• Routing Rules Auto-resolve Model — Provider-only fallbacks now automatically inherit the incoming model, removing the need to repeat model names in fallback config

🐞 Fixed

• Anthropic Empty Thinking Blocks — Strip thinking-typed content blocks with empty "thinking" fields before sending to Anthropic, preventing HTTP 400 errors from Claude Code requests
• Plugin Timer Concurrent Map Panic — Added streamingMu sync.Mutex to PluginPipeline to guard postHookTimings across concurrent goroutines during streaming; also fixed a double-pool-release race on streaming errors
• Stream Cancellation Safety — Guarded channel sends and finalizer protection prevent goroutine leaks when clients disconnect mid-stream
• Gemini Tool Outputs — Handle content block tool outputs in Responses API path for function_call_output messages (thanks @tom-diacono!)
• Gemini Thinking Level — Preserved thinkingLevel parameters across round-trip conversions and corrected finish reason mapping
• Bedrock Streaming — Emit message_stop event for Anthropic invoke stream and case-insensitive anthropic-beta header merging (thanks @tefimov!)
• Bedrock Tool Images — Preserve image content blocks in tool results when converting Anthropic Messages to Bedrock Converse API (thanks @Edward-Upton!)
• OpenAI Tool Result Output — Flatten array-form tool_result content into a string before marshaling for the Responses API so strict upstreams no longer reject with HTTP 400 (thanks @martingiguere!)
• vLLM Token Usage — Treat delta.content="" same as nil in streaming so the synthesis chunk retains finish_reason, restoring token usage in logs and UI
• Anthropic WebSearch — Removed the Claude Code user agent restriction so WebSearch tool arguments flow for all clients
• Anthropic Request Fallbacks — Dropped fallback fields from outgoing Anthropic requests to avoid schema validation errors
• Responses Streaming Errors — Capture errors mid-stream in the Responses API so clients see failures instead of silent termination
• Async Context Propagation — Preserve context values in async requests so downstream handlers retain request-scoped data
• Custom Providers — Allow custom providers without a list-models endpoint to accept any model rather than restricting on virtual key registration
• OTEL Plugin — Default insecure to true in config.json and include fallbacks in emitted OTEL metrics
• Logs UI — Switched from WebSocket push to polling for log updates; fixed polling mechanism and defaults the time range to the last hour in logs and dashboard
• Helm mcpClientConfig — Fixed templating for mcpClientConfig (thanks @crust3780!)
• Payload Marshalling — Removed unnecessary marshalling of payload in the transport path

Installation

Docker

docker run -p 8080:8080 maximhq/bifrost:v1.4.24

Binary Download

npx @maximhq/bifrost --transport-version v1.4.24

Docker Images

• maximhq/bifrost:v1.4.24 - This specific version
• maximhq/bifrost:latest - Latest version (updated with this release)

This release was automatically created with dependencies: core v1.4.23, framework v1.2.40. All plugins have been validated and updated.